Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
28th March 2022
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 6a + b and vector RS = 18a + 3b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 5/8. A player expects 55 wins. How many games did they play?
- 3Histograms2 marks
On a histogram, a 10-wide bar and a 40-wide bar have the same frequency density of 1.5. How many more values are in the wider class?
- 4Bounds3 marks
A block has mass 650 g (to the nearest 10 g) and volume 20 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.
- 5The Nth Term of a Quadratic Sequence2 marks
A quadratic sequence starts 8, 24, 50, 86. Work out the second difference, and the coefficient of n^2.
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